Microsoft Security Bulletin MS11-040 - Critical
Vulnerability in Threat Management Gateway Firewall Client Could Allow Remote Code Execution (2520426)
This security update resolves a privately reported vulnerability in the Microsoft Forefront Threat Management Gateway (TMG) 2010 Client, formerly named the Microsoft Forefront Threat Management Gateway Firewall Client. The vulnerability could allow remote code execution if an attacker leveraged a client computer to make specific requests on a system where the TMG firewall client is used.
This security update is rated Critical for Microsoft Forefront Threat Management Gateway 2010 Client. For more information, see the subsection, Affected and Non-Affected Software, in this section.
The security update addresses the vulnerability by setting proper bounds to the NSPLookupServiceNext function. For more information about the vulnerability, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.
Recommendation. Customers can configure automatic updating to check online for updates from Microsoft Update by using the Microsoft Update service. Customers who have automatic updating enabled and configured to check online for updates from Microsoft Update typically will not need to take any action because this security update will be downloaded and installed automatically. Customers who have not enabled automatic updating need to check for updates from Microsoft Update and install this update manually. For information about specific configuration options in automatic updating in supported editions of Windows XP and Windows Server 2003, see Microsoft Knowledge Base Article 294871. For information about automatic updating in supported editions of Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2, see Understanding Windows automatic updating.
For administrators and enterprise installations, or end users who want to install this security update manually, Microsoft recommends that customers apply the update immediately using update management software, or by checking for updates using the Microsoft Update service.
Known Issues. None
The following software have been tested to determine which versions or editions are affected. Other versions or editions are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, visit Microsoft Support Lifecycle.
|Software||Maximum Security Impact||Aggregate Severity Rating||Bulletins Replaced by this Update|
|Microsoft Forefront Threat Management Gateway 2010 Client||Remote Code Execution||Critical||None|
|Microsoft Internet Security and Acceleration Server 2004|
|Microsoft Internet Security and Acceleration Server 2006|
|Microsoft Forefront Threat Management Gateway, Medium Business Edition|
To improve security protections for customers, Microsoft provides vulnerability information to major security software providers in advance of each monthly security update release. Security software providers can then use this vulnerability information to provide updated protections to customers via their security software or devices, such as antivirus, network-based intrusion detection systems, or host-based intrusion prevention systems. To determine whether active protections are available from security software providers, please visit the active protections Web sites provided by program partners, listed in Microsoft Active Protections Program (MAPP) Partners.
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- V1.0 (June 14, 2011): Bulletin published.